You gotta love the internet for its wealth of knowledge. Now, if you're a science geek, I have a site that you're going to love!
What could be better than mixing science with podcasts? Audio lessons for the blind on subjects like biology and astronomy, to physics and engineering. Teachers watch out, you could get hooked and never want to put your MP3 player down.
Here is a list of 100 such science podcasts. Enjoy and remember to get some sleep!
The Smithsonian Channel
The Smithsonian Channel is a great collection of interesting and educational videos on a variety of topics. The collection is divided into seven primary categories including topics like History, America's War Stories, Pop Culture, Air and Space, and Nature.
The bulk of the videos are under five minutes making them good resources for supplementing course lectures.
Click this link to visit The Smithsonian Channel: http://www.smithsonianchannel.com/site/smithsonian/video/.